Examine source code of Link Health Inspector

{
  "manifest_version": 3,
  "name": "Link Health Inspector",
  "version": "1.0.0",
  "description": "Scan all links on any webpage — highlight unhealthy ones and export a full report in one click.",
  "icons": {
    "16": "icons/icon.svg",
    "48": "icons/icon.svg",
    "128": "icons/icon.svg"
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon.svg",
      "48": "icons/icon.svg",
      "128": "icons/icon.svg"
    },
    "default_title": "Link Health Inspector"
  },
  "permissions": [
    "activeTab",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "link-health-inspector@addon",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  }
}